docs: def getArgs(self, namespace):
          """Get the arguments that are defined for this namespace URI
  
          @returns: mapping from namespaced keys to values
          @returntype: dict
          """
          namespace = self._fixNS(namespace)
          return dict([
              (ns_key, value)
              for ((pair_ns, ns_key), value)
              in self.args.iteritems()
              if pair_ns == namespace
              ])